Sorry, no, but surely you can use FSUIPC to save a flight situation?
No, the point is to have PF3 pick up from the moment I load my flight scenario.
Could you consider this for a feature request?
In RC4 the loigc was following: it saved it's own file in parallel with FSX/P3D saving its own file. The files were different but shared the same name before the extension, I think.
Two additional options could be useful here:
1. Save with PF3 generated name (name+date+time) both in PF3 and in P3D or
2. Open a window (on PF3 machine) to enter a name you want for the scenario, perhaps with some description in a window below the file name window. The file names before extension should also be the same in this case.